50 



REPORT OF 



No. 19 



damage to tomato plants. Cabbage-worms (Pieris rapce) were very abund- 

 ant this year, and were especially injurious to cabbages and Brussels sprouts, 

 as well as to mignonette and nasturtiums in the flower garden. 



Wbite-grubs, the larvse of May-beetles or "June-bugs" {Lachno sterna) 

 — fig. 12 — caused much damage to the roots of strawberry plants at Wal- 

 lace, and were grievously complained of in consequence of their injury to 

 lawns and golf-links at London, Woodstock, Paris, Watford, Durham, Cold- 

 stream and elsewhere. In the case of lawns and boulevards in cities and 

 towns, where the affected area is not very large, spraying liberally with 

 kerosene emulsion and washing it in with plenty of water, has been found 

 somewhat effective. When the roots of the grass are so devoured that the 

 turf will roll up like a carpet, which was the case in some places, it seems 

 as if the only plan would be to remove a few inches of the soil beneath the 

 sod containing the grubs, and then to replace with fresh earth and resod. 

 In an enclosed garden poultry may be turned in to devour the grubs ; robins 

 and other birds render useful assistance also. Where the attack is on golf 

 links, it would be found serviceable to enclose the infested spots with hurdles 



Fig. 12.— May Beetle: a, beetle ; 6, pupa ; c, larva (White Grub)— slightly 

 enlarged. (Chittenden, Bull. 19, n.s. Div. of Ent., U.S. Dept. of Agr. 



and turn in a few pigs ; these would soon root up and devour the grubs and 

 could then be removed to another place. The parts of the field thus treated 

 might then be levelled and resodded or sown with grass-seed. In ordinary 

 cases the grubs thrive in old pastures, where they live underground for two 

 or three years. A proper rotation of crops and the breaking up of all such 

 fields is by far the most effective method of dealing with the insect. When 

 the beetles are flying in May and June and doing much injury to the buds 

 and foliage of trees and shrubs, spraying with Paris Green will kill large 

 numbers; tTiey can also be attracted by lights and destroyed. Boys also 

 might be employed to gather them in early evening, and to search for them 

 in their hiding places beneath the soil, along fences and against buildings. 



Fig. 13.— Red-legged Locu.st. 



While referring to pasture lands it mav bp mentioned that the Eed- 

 legged Locust {Caloptenus femur-ruhrum) — fig. 13 — was more than usually 

 abundant this year throughout western Ontario and consumed a considerable 

 amount of grass and cereals. 



4a EN. 



